Pholcus ningan Yao & Li, 2018

Zhu, Keli, Yao, Zhiyuan, Bai, Xiujuan & Li, Shuqiang, 2018, Five new species of the spider genus Pholcus Walckenaer, 1805 (Araneae: Pholcidae) from China and Thailand, Zootaxa 4377 (2), pp. 235-253 : 243-246

Pholcus ningan Yao & Li sp. nov.

FIGS 6–7

Type material. Holotype: MAlE, JINGPO LAKE SCENIC SPOT (44°03.320'N, 128°56.611'E, ElEVATION 353 M), NINGAN COUNTY, MUDANJIANG, Heilongjiang, China, 12 JUlY 2016, Z . CHEN lEG. Paratypes: 2 MAlES AND 3 FEMAlES, SAME DATA AS HOlOTYPE .

Etymology. THE SPECIFIC NAME REFERS TO THE TYPE lOCAlITY, AND IS A NOUN IN APPOSITION.

Diagnosis. THIS SPECIES RESEMBlES P. chiakensis SEO, 2014 (SEE SEO 2014: 400, FIGS 1A–E , 2A–H ) WITH SIMIlAR MAlE CHElICERAE ( FIG. 7D ) AND FEMAlE GENITAlIA ( FIGS 7A–B ) BUT CAN BE DISTINGUISHED BY THE ABSENCE OF RETROlATERAl BRANCHES ON THE MAlE PEDIPAlPAl TROCHANTER ( FIG. 6B ), BY THE ABSENCE OF POINTED APOPHYSES PROXIMAllY ON THE UNCUS ( FIG. 7C ) AND BY THE PRESENCE OF A POINTED, SClEROTIZED PROlATERAl APOPHYSIS SUBDISTAllY ON THE PROCURSUS (ARROW IN FIG. 6C ).

Description. Male (holotype): TOTAl lENGTH 5.77 (6.02 WITH ClYPEUS), CARAPACE 1.60 lONG, 2.05 WIDE, OPISTHOSOMA 4.04 lONG, 1.80 WIDE. LEG I: 44.60 (10.90 + 0.82 + 11.60 + 18.59 + 2.69), lEG II: 30.35 (8.28 + 0.71 + 7.88 + 11.86 + 1.62), lEG III: 21.39 (6.41 + 0.44 + 5.25 + 8.01 + 1.28), lEG IV: 29.17 (8.20 + 0.69 + 7.40 + 11.28 + 1.60); TIBIA I L/D: 56. DISTANCE PME-PME 0.27; DIAMETER PME 0.13; DISTANCE PME-ALE 0.08; DISTANCE AME- AME 0.05; DIAMETER AME 0.13. STERNUM WIDER THAN lONG (1.33/1.13). HABITUS AS IN FIGS 7E–F . CARAPACE YEllOWISH, WITH BROWN RADIATING MARKS AND BROWN BANDS MARGINAllY; OCUlAR AREA YEllOWISH, WITH BROWN MARKS MEDIAllY AND lATERAllY; ClYPEUS YEllOWISH, WITH BROWN MARKS MEDIAllY; STERNUM YEllOWISH, WITH BROWN MARKS. LEGS YEllOWISH, BUT DARK BROWN ON PATEllAE AND PROXIMAl PARTS OF METATARSI, AND WHITISH ON DISTAl PARTS OF FEMORA AND TIBIAE, FEMORA (SUBPROXIMAllY AND SUBDISTAllY) AND TIBIAE (SUBPROXIMAllY AND SUBDISTAllY) WITH DISTINCT DARKER RINGS. OPISTHOSOMA YEllOWISH, WITH SPOTS DORSAllY AND lATERAllY. OCUlAR AREA ElEVATED, WITHOUT EYE-STAlKS. THORACIC FURROW ABSENT. CHElICERAE AS IN FIG. 7D , WITH A PAIR OF PROXIMO-lATERAl APOPHYSES, A PAIR OF DISTAl APOPHYSES, AND A PAIR OF FRONTAl APOPHYSES. PEDIPAlPS AS IN FIGS 6A–B ; TROCHANTER WITH A VENTRAl APOPHYSIS; FEMUR WITH A DISTINCT VENTRAl PROTUBERANCE; TIBIA WITH A PROJECTION PROlATERAllY; PROCURSUS SIMPlE PROXIMAllY BUT COMPlEX DISTAllY, WITH A POINTED, SClEROTIZED PROlATERAl APOPHYSIS SUBDISTAllY (ARROW IN FIG. 6C ) AND A DORSAl SPINE (ARROW IN FIG. 6D ); UNCUS WITH A SCAlY EDGE; ‘PSEUDO-APPENDIX’ HOOKED (ARROW IN FIG. 7C ); EMBOlUS WEAKlY SClEROTIZED, WITH SOME TRANSPARENT PROJECTIONS DISTAllY. RETROlATERAl TRICHOBOTHRIUM OF TIBIA I AT 6% PROXIMAllY; lEGS WITH SHORT VERTICAl SETAE ON TIBIAE, METATARSI AND TARSI, WITHOUT SPINES AND CURVED SETAE; TARSUS I WITH 36 DISTINCT PSEUDOSEGMENTS.

Female: SIMIlAR TO MAlE, HABITUS AS IN FIGS 7G–H . TOTAl lENGTH 5.13 (5.38 WITH ClYPEUS), CARAPACE 1.47 lONG, 1.76 WIDE, OPISTHOSOMA 3.66 lONG, 1.90 WIDE; TIBIA I: 8.65; TIBIA I L/D: 52. DISTANCE PME-PME 0.21; DIAMETER PME 0.09; DISTANCE PME-ALE 0.08; DISTANCE AME-AME 0.05; DIAMETER AME 0.13. STERNUM WIDER THAN lONG (1.19/ 0.94). ClYPEUS BROWN. EPIGYNUM ( FIG. 7A ) WITH A KNOB. VUlVA ( FIG. 7B ) WITH A SClEROTIZED ANTERIOR ARCH AND TWO NEARlY EllIPTIC PORE PlATES.

Variation: TIBIA I IN ONE MAlE PARATYPE (lEG I MISSING IN ANOTHER MAlE PARATYPE): 10.26. TIBIA I IN ONE FEMAlE PARATYPE (lEG I MISSING IN ANOTHER FEMAlE PARATYPE): 8.40.

Distribution. CHINA (HEIlONGJIANG, TYPE lOCAlITY; FIG. 12 ).

Natural history. THE SPECIES WAS FOUND ON THE ROCK WAllS.

Figures

FIGURE 1. Pholcus sakaew Yao & Li sp. nov., holotype male. A–B. Flipped right pedipalp (A. Prolateral view; B. Retrolateral view, arrow points at dorsal apophysis on femur proximally); C–D. Distal part of flipped right procursus (C. Prolateral view, arrow 1 points at membranous prolateral process, arrow 2 points at prolatero-dorsal spine; D. Dorsal view, arrow points at sclerotized prolateral apophysis). a = appendix, b = bulb, e = embolus, pr = procursus, u = uncus. Scale bars: 0.20 (A–B), 0.10 (C–D).

FIGURE 2. Pholcus sakaew Yao & Li sp. nov., holotype male (C–F) and paratype female (A–B, G–H). A. Epigynum, ventral view; B. Vulva, dorsal view; C. Flipped right bulbal apophyses, prolateral view; D.Chelicerae, frontal view; E–H. Habitus (E, G.Dorsalview; F.Lateral view; H.Ventral view).a = appendix,da = distal apophysis,e = embolus, fa= frontal apophysis,pa = proximo-lateral apophysis, pp = pore plate, u = uncus.Scale bars: 0.10 (A–C), 0.20 (D), 1.00 (E–H).

FIGURE 7. Pholcus ningan Yao & Li sp. nov., holotype male (C–F) and paratype female (A–B, G–H).A. Epigynum, ventral view; B. Vulva, dorsal view; C. Bulbal apophyses, prolateral view, arrow points at ‘pseudo-appendix’; D. Chelicerae, frontal view; E–H. Habitus (E, G. Dorsal view; F. Lateral view; H. Ventral view). da = distal apophysis, e = embolus, fa = frontal apophysis, pa = proximo-lateral apophysis, pp = pore plate, u = uncus. Scale bars:0.10 (A–D), 1.00 (E–H).

FIGURE6. Pholcus ningan Yao &Li sp.nov., holotype male. A–B.Pedipalp (A. Prolateralview; B. Retrolateral view); C–D. Distal part of procursus (C. Prolateral view, arrow points at sclerotized prolateral apophysis; D. Dorsal view, arrow points at dorsal spine).b = bulb, e = embolus, pr = procursus, u = uncus. Scale bars:0.20 (A–B), 0.05 (C–D).

FIGURE12. Distribution records of new Pholcusspecies from China and Thailand.1. P.sakaewYao & Li sp. nov. from the P. bidentatus species-group; 2. P.umphang Yao & Li sp. nov. from the P. halabala species-group; 3. P. ningan Yao & Li sp. nov. from the P. phungiformes species-group; 4. P. yongshun Yao & Li sp. nov. and 5. P. yuxi Yao & Li sp. nov. from the P. yichengicusspecies-group.